Chemistry in Everyday Life is a Class 12 Chemistry chapter that carries about 2.5% of the Chemistry questions in NEET. Practise it with 39 questions covering 3 topics, each with an explanation.
Sample questions on Chemistry in Everyday Life with answers
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
Question 1: Cleansing Agents: Soaps and Detergents
Soaps do not work well in hard water because:
- A soap decomposes
- B the Ca²⁺ and Mg²⁺ ions form insoluble calcium and magnesium salts, or scum
- C soap becomes a gas
- D the water is too acidic
Answer: B. the Ca²⁺ and Mg²⁺ ions form insoluble calcium and magnesium salts, or scum
Why: Detergents do not form this scum.
Question 2: Drugs and Their Classification
Which of the following is a broad-spectrum antibiotic?
- A penicillin G
- B dysidazirine
- C chloramphenicol
- D salvarsan
Answer: C. chloramphenicol
Why: It is effective against many types of bacteria.
Question 3: Food Additives and Preservatives
Which artificial sweetener is unstable at cooking temperatures and so is used only in cold foods and drinks?
- A alitame
- B saccharin
- C aspartame
- D sucralose
Answer: C. aspartame
Why: Aspartame decomposes at baking or cooking temperatures, which limits its use.
Question 4: Cleansing Agents: Soaps and Detergents
Soap is made by the alkaline hydrolysis of fats. This is called:
- A saponification
- B esterification
- C hydrogenation
- D polymerisation
Answer: A. saponification
Why: Glycerol is a by-product.
Question 5: Drugs and Their Classification
Cimetidine and ranitidine are used to:
- A relieve pain
- B kill bacteria
- C reduce the secretion of acid in the stomach by blocking histamine H₂ receptors
- D reduce fever
Answer: C. reduce the secretion of acid in the stomach by blocking histamine H₂ receptors
Why: They are better than antacids, which only neutralise acid.
Question 6: Food Additives and Preservatives
BHT (butylated hydroxytoluene) and BHA are added to foods as:
- A preservatives that kill bacteria
- B colouring agents
- C sweeteners
- D antioxidants, which prevent the oxidation of fats
Answer: D. antioxidants, which prevent the oxidation of fats
Why: They are phenolic compounds that act as radical traps.
Question 7: Cleansing Agents: Soaps and Detergents
Liquid dishwashing detergents, which contain polyethylene glycol stearate, are examples of:
- A anionic detergents
- B non-ionic detergents
- C soaps
- D cationic detergents
Answer: B. non-ionic detergents
Why: They are formed by the reaction of stearic acid with polyethylene glycol.
Question 8: Drugs and Their Classification
Tranquilisers such as luminal and seconal are:
- A barbiturates, which act on the central nervous system
- B antacids
- C antibiotics
- D analgesics
Answer: A. barbiturates, which act on the central nervous system
Why: They are used to treat depression and stress.